Roaming the universe, all thanks to your many dark skills!

"Water." Rosen said calmly, "I already knew it when I was in junior high school."

"You're right." Mark said, "Now, I still have several hundred liters of unused hydrazine in my aircraft. I will use iridium to catalyze it, and it will decompose into nitrogen and hydrogen. I only need to gather the hydrogen in a small area and ignite it. It will simply reshape human history."

"Yes." Rosen smiled and said, "Maybe it's to reshape yourself. Don't forget that the combustion of hydrogen and oxygen will also generate a lot of heat. If it can't be dissipated, it will explode..."

"Don't be such a bummer. I've done some careful calculations, so there won't be any problems." Mark said confidently, "It never hurts to light up the hydrogen. NASA hates fire because, generally speaking, fire is a killer of humans in the sky."

"So everything they sent here was flame retardant, obviously excluding Martinez's personal belongings."

Mark took out a wooden cross and shook it towards Rosen, saying, "With fire, all problems can be solved."

After filling the tank with hydrazine, Mark drove Rosen back to the living cabin and continued to operate and explain things, just like a chatterbox who had been depressed for a long time but had no one to talk to.

"Hey, Mark, has anyone ever told me that you are suitable to be a teacher?" Rosen said.

"Really not." Mark smiled and said, "If I can return to Earth alive, I will follow your advice and become a teacher at a university, teaching them how to grow potatoes on Mars, how to survive, and how to get along with the Chinese."

"Haha." Rosen laughed when he heard that.

Mark put on goggles, lit the wood chips cut from the cross, and prepared to use the flame to ignite the hydrogen produced by the decomposition of hydrazine, allowing it to burn quietly in an oxygen environment to obtain water.

I have to say that Mark's thinking is very smooth.

But when it comes to operation, it’s a bit... a slight mistake can lead to a huge mistake.

At first, the hydrogen did burn as he expected. Mark was extremely excited and cheered.

Rosen, who was standing next to him, saw this and without saying a word, grabbed his arm and teleported him away.

The reason why he didn't rely on his legs to retreat or dodge was because Rosen was afraid that he would be too late.

Of course, what’s more important is that his teleportation is now so smooth, which is much more convenient than running and jumping.

In order not to scare Mark, he did not teleport too far, only four or five meters.

Bang.

The next moment, there was an explosion and flames billowed.

Because of Rosen's rescue, Mark was not blown to the ground like in the original plot.

Although the situation was not that serious at the time, otherwise he would have been dead.

"Wow, Rosen, did we just get here directly from there?" Mark pointed to where he had just stood, then looked at where he was now, then looked at Rosen and asked uncertainly, "Kung Fu?"

"No." Rosen shook his head and said, "Magic."

"Stop it." Mark didn't believe him. He rubbed his forehead and said, "Anyway, thank you for saving me again. Did you expect it to explode?"

"That's about right." Rosen nodded and said, "You thought well, but you overlooked one thing. We both breathe oxygen, too. It accumulates in the cabin and will eventually burn with the hydrogen. You may have overlooked it when you calculated."

"Hmm." Mark rubbed his ears and said, "Okay, I admit that I'm a little stupid, but it doesn't matter. When my ears stop buzzing, I'll keep trying."

Rosen nodded and encouraged, "Come on."

With the experience of failure, Mark's next hydrogen-oxygen combustion water production experiment was naturally completed successfully.

To celebrate Mark's success, Rosen treated him to a meal of noodles with soybean paste and some home-cooked dishes.

Judging from Mark's expression while eating, he seemed to be so-so about the noodles with soybean paste, but he still ate it all up.

Apparently, the lack of food had taken its toll on him, and he was beginning to change.

While Mark was busy serving his potatoes, Rosen was also busy.

Farming is not a difficult task for him who has level 4 farm proficiency, and it naturally does not take up too much of his time. Apart from watering the crops on time every day, there is basically nothing else to do.

After all, there are no pests on Mars, and even if there are, they might be eaten by the poisonous vines that guard the glass greenhouse every day.

In addition, there are no weeds here either, so there is naturally no need to weed or anything.

So when he had nothing to do, Rosen rode an electric tricycle around Mars.

Since electric tricycles have limited battery power, they can only travel within a radius of 20 to 30 kilometers at best.

It was okay at first, Lawson was quite novel, but I got bored after a while, so I gave up the electric tricycle and started to drive around by flash.

Sometimes when he didn't want to walk, he would sit on the shoulders of the clay golem and let it carry him and run wildly on Mars.

Before traveling through time, Rosen had collected many maps of Mars.

But after arriving, he found that these maps were either incomplete or had deviations. If he were not an expert in maps, he might have really gotten lost on Mars. At that time, he might have achieved an achievement such as being the first person to get lost on Mars, which would have left a shameful page in the history of human exploration of Mars.

It is worth mentioning that Rosen is obsessed with exploring not only because he has nothing to do, but mainly for the sake of gaining achievements.

Not long ago, when the seeds he planted sprouted one after another, he achieved a lot of success.

For example: the first person to grow Chinese cabbage on Mars, the first person to grow corn on Mars...

Although achievements like these are basically useless, neither giving attributes nor rewarding the opportunity to extract skills or items, they can still earn you medals.

Although the medal is still a blank slate with no attributes, it looks good.

More importantly, it satisfied Rosen's desire to collect, so in order to accumulate more new medals, he began a journey of exploring Mars and gaining achievements.

It has to be said that on a planet where no human has ever set foot before, no matter what Rosen does, he may achieve success.

I've been collecting a lot of achievements, but unfortunately, almost none of them are useful.

But Rosen enjoyed it.

Of course, in addition to such useless things, Rosen also tried to do some serious work, such as making a map of Mars while wandering around.

He certainly didn't know how to survey maps before, but now with level 3 map expertise and an M44 compass that will never get lost, everything has become a lot easier.

As Rosen wandered outside for longer and longer periods of time, he ran farther and farther, and his range of activities expanded rapidly.

But he still managed to return home on time every day and never spent the night outside.

The reason is that his teleportation is constantly upgraded due to his frequent use.

"Teleportation, LV5, can reach anywhere within a meter."

"Your map expertise has been upgraded to Level 4. Any map you have ever looked at will always point you in the right direction, and the terrain you have seen will automatically form a map in your mind for you to check at any time."

“Because teleportation and map expertise are interrelated, a new skill has been derived: delivery. As long as you have and loaded a detailed map of a certain area, you can complete precise teleportation within a certain range even if you have never been to that area.”

"Current level LV1. Any coordinate point within a 500-meter radius around you can be delivered. If there are obstacles near the delivery location, the landing point will be fine-tuned to ensure your safety."

"Note: It's not just people that can be delivered, other objects can also be delivered."

When Rosen saw the last note, he couldn't help but take a breath.

This was a blatant hint that he would be able to deliver any item to the enemy's home thousands of miles away in the future.

This is definitely a powerful weapon that can easily kill enemies while sitting at home, and you don’t have to worry about them being involved in any way.

I must level up the projected world as quickly as possible. Whether I can live as I wish in other worlds in the future depends on whether it can help me. Rosen made up his mind and started to level up like crazy.

Note: This is how it was translated in the movie version I watched. I also saw some experts say that it was rocket fuel hydrazine N2H4. I really don’t know what it is specifically, so let’s just take it as a guess. Anyway, we are not growing potatoes on Mars, hehe.